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Hi-Yield Aluminum Sulfate is used as a soil acidifier to correct undesirable alkaline soil and to make Hydrangea blooms blue. Before using Hi-Yield Aluminum Sulfate test your soil pH and if the pH is above 7.0 then this product will be effective in bringing the pH down towards 5.5 which is desirable for plants that require more acidic soils. Plants such as Hydrangeas (blue), Azaleas, Camellias, Rhododendrons, Gardenias, and Holly thrive in more acidic soils.
With Hydrangeas remeber that Hi-Yield Aluminum Sulfate can turn white or pink blossoms to blue.
Do not use Phosphate fertilizers with this product as the phosphate will make the Aluminum less available to plants.
Product Documents
| Active Ingredient | Aluminum Sulfate 17.09% |
|---|---|
| Target pests | Alkaline Soil conditions |
| For use in |
Acid-loving plants such as: Azaleas, Rhododendrons, Camellias, Gardenias, Hydrangeas (Blue), Junipers, Yews, Cypress, Caneberry, Huckleberry, Magnolia, Oak, Pine and certain others * See label for complete list |
| Application |
Shrubs: 1 lb. per 3 ft. ht. per 5 gallons of water Trees: 1 lb. per inch of diameter per 5 gallons of water * See label for complete application instructions |
| Pet safe | Yes, if used as directed on Label |
| Special Features |
Maintains or Changes color of White or Pink Hydrangeas to Blue Helps create an Acid Soil Condition |
| Shipping Weight | 4.00 lbs |
| Manufacturer | VPG (Mfg. Number: 32175) |
| UPC | 732221321755 |
HI-YIELD ALUMINUM SULFATE is used primarily to acidify soils. Determine current pH level with a soil test. If pH is above 7.0, an application of Aluminum Sulfate will be effective in lowering soil pH to the 5.5 range which is desirable for growing acid-loving plants. Recheck the soil pH two weeks after application. If needed, reapply only to those areas where the desirable pH is required to maintain vigorous plants.
HI-YIELD ALUMINUM SULFATE helps create an acid soil condition (corrects excess alkalinity) which is desirable to the growth of certain type plants, such as Azaleas, Rhododendrons, Camellias, Gardenias, Hydrangeas (blue), Junipers, Yews, Cypress, Magnolia, Oak, Pine and certain others.
By acidifying the soil, HI-YIELD ALUMINUM SULFATE can maintain or change the color of Hydrangea flowers. Blue Hydrangeas require Aluminum as an acidifier, to retain their blue color. They should not be fed a Phosphate fertilizer due to the fact that it has a tendency to “tie-up” Aluminum. Do not use HI-YIELD ALUMINUM SULFATE on white or pink varieties unless a color to blue is desired
DIRECTIONS FOR USE
SHRUBS
Use 1 lb. per 3 ft. of height. Mix 1 lb. in 5 gallons of water and apply at the drip line of the shrub. HI-YIELD ALUMINUM SULFATE can also be spread dry around the drip line and watered in.
TREES
Use 1 lb. per inch of diameter. Mix in 5 gallons of water or apply dry at the drip line of the tree and water in thoroughly.
SOIL
To help correct alkaline soil, use 5 lbs. per 100 square feet. Wash off foliage and water in well after application.
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Worked Great!
By Caterina on 04/20/2020
Hi Yield
By Darren on 10/31/2020
Per the product label: Recheck the pH two weeks after application. If needed, reapply only to those areas where the desirable pH is required to maintain vigorous plants. Hi-Yield Aluminum Sulfate helps create an acid soil condition which is desirable for hydrangeas (blue). By acidifying the soil, Hi-Yield Aluminum Sulfate can maintain or change the color of Hydrangea flowers. Blue Hydrangeas require Aluminum as an acidifier, to retain their blue color. They should not be fed a Phosphate fertilizer due to the fact that it has a tendency to “tie-up” Aluminum.
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8 of 14 people found this answer helpful
Hi-Yield Aluminum Sulfate is not labeled for use on anything edible. It is only labeled for use on trees and shrubs.
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At end of blooming last year some blooms were turning pinkish. My nursery recommend HI-YIELD aluminum sulfate in dry form which I bought but the package doesn't give me enough info. My plant is in a 14"pot with the hydrangea growing about 2'. How much without harming the plant is appropriate. The nursery also advised watering it in with Acid Loving, water soluble plant food 31-11-11. Your response would be appreciated.
Per the product label for Hi-Yield Aluminum Sulfate: Use 1 lb. per 3 ft. of height. Mix 1 lb. in 5 gallons of water and apply at the drip line of the Shrub. HI-YIELD ALUMINUM SULFATE can also be spread dry around the drip line and watered in. If you spread dry we would recommend you use 2/3 lb per 2 ft of height and then water in with sufficient water or you could use the mix of Ferti-Lome Acid Loving Water Soluble Plant Food 31-11-11 following the rates on its label.
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2 of 6 people found this answer helpful
My lawn reads above seven PH ON THE SCALE I have an area approx 1000sq feet to treat how much aluminum sulfate
To create more acidic soil for acid-loving plants, you would use Hi-Yield Aluminum Sulfate for shrubs at a rate of 1 lb. per 3 feet of height per 5 gallons of water. For trees, use 1 lb per inch of trunk diameter per 5 gallons of water.
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Hi-Yield Aluminum Sulfate
Rating: 5 (2 Reviews / 10 Q&A)
